Zobrazeno 1 - 10
of 246
pro vyhledávání: '"Panopoulou, G"'
Autor:
Panopoulou, G. V., Zucker, C., Clemens, D., Pelgrims, V., Soler, J. D., Clark, S. E., Alves, J., Goodman, A., Tjus, J. Becker
We investigate the geometry of the magnetic field towards the Radcliffe Wave, a coherent 3-kpc-long part of the nearby Local Arm recently discovered via three-dimensional dust mapping. We use archival stellar polarization in the optical and new measu
Externí odkaz:
http://arxiv.org/abs/2406.03765
Autor:
Pelgrims, V., Mandarakas, N., Skalidis, R., Tassis, K., Panopoulou, G. V., Pavlidou, V., Blinov, D., Kiehlmann, S., Clark, S. E., Hensley, B. S., Romanopoulos, S., Basyrov, A., Eriksen, H. K., Falalaki, M., Ghosh, T., Gjerløw, E., Kypriotakis, J. A., Maharana, S., Papadaki, A., Pearson, T. J., Potter, S. B., Ramaprakash, A. N., Readhead, A. C. S., Wehus, I. K.
We present the first degree-scale tomography map of the dusty magnetized interstellar medium (ISM) from stellar polarimetry and distance measurements. We used the RoboPol polarimeter at Skinakas Observatory to conduct a survey of starlight polarizati
Externí odkaz:
http://arxiv.org/abs/2404.10821
Autor:
Mandarakas, N., Panopoulou, G. V., Pelgrims, V., Potter, S. B., Pavlidou, V., Ramaprakash, A., Tassis, K., Blinov, D., Kiehlmann, S., Koutsiona, E., Maharana, S., Romanopoulos, S., Skalidis, R., Vervelaki, A., Clark, S. E., Kypriotakis, J. A., Readhead, A. C. S.
Context. Calibration of optical polarimeters relies on the use of stars with negligible polarization (unpolarized standard stars) for determining the instrumental polarization zero-point. For wide-field polarimeters, calibration is often done by imag
Externí odkaz:
http://arxiv.org/abs/2312.06435
Autor:
Blinov, D., Maharana, S., Bouzelou, F., Casadio, C., Gjerløw, E., Jormanainen, J., Kiehlmann, S., Kypriotakis, J. A., Liodakis, I., Mandarakas, N., Markopoulioti, L., Panopoulou, G. V., Pelgrims, V., Pouliasi, A., Romanopoulos, S., Skalidis, R., Anche, R. M., Angelakis, E., Antoniadis, J., Medhi, B. J., Hovatta, T., Kus, A., Kylafis, N., Mahabal, A., Myserlis, I., Paleologou, E., Papadakis, I., Pavlidou, V., Papamastorakis, I., Pearson, T. J., Potter, S. B., Ramaprakash, A. N., Readhead, A. C. S., Reig, P., Słowikowska, A., Tassis, K., Zensus, J. A.
Publikováno v:
A&A 677, A144 (2023)
Optical polarimeters are typically calibrated using measurements of stars with known and stable polarization parameters. However, there is a lack of such stars available across the sky. Many of the currently available standards are not suitable for m
Externí odkaz:
http://arxiv.org/abs/2307.06151
Autor:
Panopoulou, G. V., Markopoulioti, L., Bouzelou, F., Millar-Blanchaer, M. A., Tinyanont, S., Blinov, D., Pelgrims, V., Johnson, S., Skalidis, R., Soam, A.
Polarimetry of stars at optical and near-infrared wavelengths is an invaluable tool for tracing interstellar dust and magnetic fields. Recent studies have demonstrated the power of combining stellar polarimetry with distances from the Gaia mission, i
Externí odkaz:
http://arxiv.org/abs/2307.05752
Autor:
Maharana, S., Kiehlmann, S., Blinov, D., Pelgrims, V., Pavlidou, V., Tassis, K., Kypriotakis, J. A., Ramaprakash, A. N., Anche, R. M., Basyrov, A., Deka, K., Eriksen, H. K., Ghosh, T., Gjerløw, E., Mandarakas, N., Ntormousi, E., Panopoulou, G. V., Papadaki, A., Pearson, T., Potter, S. B., Readhead, A. C. S., Skalidis, R., Wehus, I. K.
Publikováno v:
A&A 679, A68 (2023)
Next-generation wide-field optical polarimeters like the Wide-Area Linear Optical Polarimeters (WALOPs) have a field of view (FoV) of tens of arcminutes. For efficient and accurate calibration of these instruments, wide-field polarimetric flat source
Externí odkaz:
http://arxiv.org/abs/2305.04270
Autor:
Skalidis, R., Gkimisi, K., Tassis, K., Panopoulou, G. V., Pelgrims, V., Tritsis, A., Goldsmith, P. F.
Publikováno v:
A&A 673, A76 (2023)
The formation of molecular gas in interstellar clouds is a slow process, but is enhanced by gas compression. Magnetohydrodynamic (MHD) waves create compressed quasiperiodic linear structures, referred to as striations. Striations are observed at colu
Externí odkaz:
http://arxiv.org/abs/2303.04172
Autor:
Pelgrims, V., Panopoulou, G. V., Tassis, K., Pavlidou, V., Basyrov, A., Blinov, D., Gjerløw, E., Kiehlmann, S., Mandarakas, N., Papadaki, A., Skalidis, R., Tsouros, A., Anche, R. M., Eriksen, H. K., Ghosh, T., Kypriotakis, J. A., Maharana, S., Ntormousi, E., Pearson, T. J., Potter, S. B., Ramaprakash, A. N., Readhead, A. C. S., Wehus, I. K.
Publikováno v:
A&A 670, A164 (2023)
We present the first Bayesian method for tomographic decomposition of the plane-of-sky orientation of the magnetic field with the use of stellar polarimetry and distance. This standalone tomographic inversion method presents an important step forward
Externí odkaz:
http://arxiv.org/abs/2208.02278
The interstellar medium contains filamentary structure over a wide range of scales. Understanding the role of this structure, both as a conduit of gas across the scales and a diagnostic tool of local physics, is a major focus of star formation studie
Externí odkaz:
http://arxiv.org/abs/2203.09562
Autor:
Panopoulou, G. V., Clark, S. E., Hacar, A., Heitsch, F., Kainulainen, J., Ntormousi, E., Seifried, D., Smith, R. J.
Publikováno v:
A&A 657, L13 (2022)
Context: Filamentary structures in nearby molecular clouds have been found to exhibit a characteristic width of 0.1 pc, as observed in dust emission. Understanding the origin of this universal width has become a topic of central importance in the stu
Externí odkaz:
http://arxiv.org/abs/2111.08125